Question

if x= y,3x-y=4 and x+y+z=6 then find value of 'Z'

Answer 1

if x=y

3x-y=4
putting the value of x

3y-y=4
 2y=4
y=2
now x=y
so y=2

now    x+y+z=6
2+2+z=6
4+z=6
z=6-4
z=2
hence the value of z is 2

Answer 2

x=y
3 x-y=4
3y-y=4
2y=4
y=2


x+y+z=6
y+y+z=6
2+2+z=6
4+z=6
z=6-4
z=2


x=y=z=2